.px2rem(@name, @px){
    @{name}: @px / 75 * 1rem;
}
body{
    background: #eeeeee;
    .header{
        .px2rem(height, 90);
        width:100%;
        background: #000;
        color: #c6c6c7;
        display: flex;
        justify-content: space-between;
        align-items: center;
        position: fixed;
        left:0;
        top:0;
        z-index: 109;
        .left,.right{
            .px2rem(width, 150);
            .px2rem(line-height, 90);
            .px2rem(font-size, 28);
            text-align: center;
        }
        .center{
            .px2rem(width, 220);
            .px2rem(line-height, 90);
            .px2rem(font-size, 34);
            text-align: center;
        }
    }
    .nav{
        .px2rem(margin-top, 90);
        .px2rem(height, 90);
        background: #ffffff;
        ul{
            .px2rem(height, 90);
            display: flex;
            justify-content: space-between;
            li{
                .px2rem(line-height, 90);
                .px2rem(padding-left, 10);
                .px2rem(padding-right, 10);
                .px2rem(font-size, 30);
                color: #999;
            }
            .on{
                border-bottom: 2px solid orangered;
                color: #000;
            }
        }
        ul li:first-child{
            margin-left:20%;
        }
        ul li:last-child{
            margin-right:20%;
        }
    }
    .main{
        background: #ffffff;
        dl{
            dt{
                img{
                    width: 100%;
                }
            }
            .dd1{
                .px2rem(line-height, 50);
                .px2rem(margin-left, 20);
                .px2rem(font-size, 30);
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            .dd2{
                .px2rem(line-height, 36);
                .px2rem(margin-left, 20);
                .px2rem(margin-right, 20);
                .px2rem(font-size, 24);
                .px2rem(height, 80);
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
                color: #999;
            }
        }
    }
    .footer{
        .px2rem(height, 90);
        .px2rem(line-height, 90);
        background: #eee;
        color: #adadad;
        text-align: center;
    } 
}